Sample of gneiss. Gneiss is formed when igneous rock (such as granite) or sedimentary rock (such as sandstone or shale) is subjected to high temperatures and pressures over extended periods of time | |
Licence : | Droits gérés |
Crédit: | Science Photo Library |
Taille de l’image : | 4200 px × 4200 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |